Quartz: Twitter’s had a tough time convincing people to sign up for accounts. Now it’s moving on to plan B: make money off non-users who see its tweets. CEO Jack Dorsey revealed that the company will begin a pilot in the fourth quarter to show ads to “logged-out users,” or people who don’t have accounts or aren’t logged in but nonetheless see its tweets. As far as monthly active users go, Twitter just reported yet another quarter of disappointing growth. It added only 4 million new users, ending the third quarter with 320 million monthly active users.